User manual JBL P-7520

[. . . ] Included in the Universal Interface circuit is Common SenseTM turn-on. Common Sense turn-on senses the common-mode voltage present on the speaker outputs of factory and aftermarket radios, turning on the amplifier without a separate remote wire. All Power Series amplifiers feature built-in electronic crossovers and preamp outputs for easy system expansion without requiring outboard processors. About This Manual To attain maximum amplifier performance, we encourage you to read the remaining pages before installing and operating your new JBL Power Series amplifier. Especially review the Applications section for ideas on designing and expanding your system. [. . . ] HP (4 ohm) 530µF 400µF 318µF 265µF 227µF 198µF SPEAKER OUTPUTS + + ­ ­ FUSE 40A POWER +BATT REM GND LINE LEVEL INPUT UNIVERSAL INTERFACE REAR +R­ REAR ­L+ L +R­ ­L+ R FRONT 8 2V 80Hz 12 75Hz 100Hz 125Hz 150Hz 175Hz 200Hz 40 4V LEVEL . 250V 32Hz FREQ 320Hz Wiring the Power Connections Refer to diagrams on pages 3 and 4 for connector locations. For power, remote and speaker wires, strip 1/4" off one end of each jacket to reveal bare wire for insertion into the barrier strip connectors. Locate the 3-connection barrier strip labeled +Batt, Rem and Gnd. Connect a black wire (at least 10G) to the Gnd terminal and connect the other end to the nearest bare-metal chassis component. Then, connect a red wire (at least 10G) from the vehicle's +12-volt battery terminal to the +Batt terminal on the barrier strip. Finally, connect a blue wire (16G) to the Rem terminal on the barrier strip and connect the other end to the Rem output of the source unit. If you are using speaker-level inputs and speaker-level outputs from the source, disregard the previous instruction regarding the Rem terminal. Wiring the Speaker Output Connections 1. Connect the speakers, observing proper polarity, to the speaker-output barrier strip on the amplifier using at least 16G high-quality speaker wire. (Note: The total impedance of the speakers connected to the outputs when the amp is driven in stereo must be at least 2 ohms. Because the P-2510 is a single-channel amplifier, the speaker connections on the barrier strip are wired in parallel inside the amp. The total impedance of the speakers connected to the P-2510 must be at least 2 ohms. ) 2. If you are bridging the amplifier, connect the speaker wires to the terminals marked "bridge, observing prop" er polarity. (Note: The total impedance of the speaker system to be connected to the amplifier must be at least 4 ohms in bridge mode. ) Mounting the Amplifier The JBL P-7520, P-7540 or P-2510 can be mounted in virtually any location inside the vehicle. However, make sure to keep the amplifier away from heater vents or ducts. At the chosen site, use the amplifier as a mounting template and mark the locations of the four mounting holes. Drill a small pilot hole at each marked location. Mount the amplifier and securely tighten the mounting screws. 3. If you are running either the P-7520 or the P-7540 in tri-mode (stereo and mono simultaneously to one or two pairs of satellite speakers and a subwoofer), refer to the chart above to determine the capacitor and inductor values you'll need to route bass signals to the woofer, and midrange and high frequencies to the satellite speakers. These passive-crossover components will also ensure that the impedance of the speaker system doesn't drop below 2 ohms. The P-2510 should be used to drive woofers only as its bandwidth is limited to 20Hz ­ 320Hz. Wiring the Input Connections 1. If you are using conventional RCA input connections and a source unit with output voltage less than 4V, simply plug the RCA plugs into the RCA jacks on the amplifier. 4 2. If you are connecting the amplifier to a factory-installed source unit, or to a source unit that only has speaker-level outputs, connect the speaker outputs of the source to the speaker inputs on the amp, observing the following color-code: Front Left+: White Front Left­: White with black stripe Front Right+: Gray Front Right­: Gray with black stripe Rear Left+: Green Rear Left­: Green with black stripe Rear Right+: Purple Rear Right­: Purple with black stripe (Note: When using the Universal Interface speaker-level inputs and speaker-level outputs, the Rem terminal on the amplifier may be used as a remote output connection and will provide power to turn on other amplifiers and processors in the system. ) (Note: The front and rear inputs on the P-2510 are summed to mono inside the amp, and will provide constant bass regardless of the position of source unit balance and fader controls. ) 3. [. . . ] Elaborate, multichannel systems may be complex to adjust. Your local JBL installation specialist is the best person to help with such an adjustment. Applications For your convenience, we've included several application diagrams to help you plan your own system installation. Figures 1 through 4 show how to configure the JBL P-7520, P-7540 or P-2510 for stereo, bridged-mono and tri-mode operation. For system expansion ideas, see Figure 5 on the previous page. [. . . ]